4-your-brain

[4-your-brain]

Magnetic Micro-Robots | Veritasium

Tiny robots activated by magnetic fields may be used in future biomedical procedures. Research Referenced in this video: T. Xu, J. Zhang, M. Salehizadeh, O. Onaizah and E. Diller, Millimeter-scale flexible robots with programmable three-dimensional magnetization and motions. Science Robotics. 4, eaav4494 (2019). http://robotics.sciencemag.org/lookup... H. Xie, M. Sun, X. Fan,  Z. Lin, W. Chen, L. Wang, L. Dong, and Q. He, Reconfigurable magnetic microrobot swarm: Multimode transformation, locomotion, and manipulation. Science Robotics. 4, eaav8006 (2019). http://robotics.sciencemag.org/lookup... G. Hwang, A. J. Paula, E. E. Hunter, Y. Liu, A. Babeer, B. Karabucak, K Stebe, V. Kumar, E. Steager, and H. Koo, Catalytic antimicrobial robots for biofilm eradication. Science Robotics. 4, eeaw2388 (2019). http://robotics.sciencemag.org/lookup...

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First Images of Black Holes! | Veritasium

The Event Horizon Telescope Collaboration observed the supermassive black holes at the center of M87 and our Milky Way galaxy (SgrA*) finding the dark central shadow in accordance with General Relativity, further demonstrating the power of this 100 year-old theory.

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How to Understand the Image of a Black Hole | Veritasium

We are about to see the first image of a black hole, the supermassive black hole Sagittarius A* at the center of the Milky Way galaxy. But what is that image really showing us? This is an awesome paper on the topic by J.P. Luminet: Image of a spherical black hole with thin accretion disk Astronomy and Astrophysics, vol. 75, no. 1-2, May 1979, p. 228-235 https://ve42.co/luminet

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Hey guys today something not science related.

Music like this needs so much more attention. Such a beautiful message.

Appreciate what you have cause someday it'll be gone.

[4-your-brain]

Immune cells tackle a human obstacle course | nature video

Immune cells inside the body need to make their way through densely packed tissues, squeezing through gaps and finding the most efficient route. During metastasis, cancer cells may make use of a similar type of locomotion. Now, experiments reveal how the cells probe different paths and use their bulky nucleus to gauge the size of gaps. Read more about this research: https://www.nature.com/articles/s4158...

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AND THE WINNER IS …

@sandrasuse     You guessed 2101 and we were 2112. so pretty close.

Congrats ! Though you were pretty late you were still on time and therefore you won the 50€ Amazon Gift Card 🎉

I wrote you a message.

Thanks to all participants and don´t be sad there will be another contest sometime ;)

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Why Do Compressed Air Cans Get Cold? | minutephysics

This video is about compressed air cans (aka gas dusters) and why they get cold when you spray them. They cool off because the refrigerant inside (1,1-difluoroethane) is under pressure and boils off when the pressure lowers, and energy lost to the latent heat of vaporization cools the can a lot.

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This is the fifth video in my Amazon Gift Card contest.

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Manipulating the YouTube Algorithm - (Part 1/3) | SmarterEveryDay

My first video of a 3 part series on "coordinated inauthentic behavior". Thanks to ExpressVPN for sponsoring this series.Renée Diresta is a Mozilla Fellow in Media, Misinformation, and Trust, where she researches unintended consequences of algorithms and works towards helping machines make better decisions. Renee also writes about disinformation and the changing face of information war — check out her essay “The Digital Maginot Line” (https://www.ribbonfarm.com/2018/11/28...) — and is a contributor to Wired Ideas (https://www.wired.com/author/renee-di...).

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This is the fourth video in my Amazon Gift Card contest.

[4-your-brain]

What If We Detonated All Nuclear Bombs at Once? | Kurzgesagt – In a Nutshell

What happens if make a huge pile from all 15,000 nuclear bombs and pull the trigger? And what happens if we make an even bigger pile?

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This is the third video in my Amazon Gift Card contest.

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The History of Video | Veritasium

I always wanted to know why film looked better than video. Moving electronic images have as long a history but were invented for a different purpose. This video was sponsored by B&H Photo: https://www.bhphotovideo.com

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This is the second video in my Amazon Gift Card contest.

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The Paradox Paradox | Vsauce3

Is time travel a paradox in itself ? And what kind of time travel paradoxes are there ?

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This is the first video in my Amazon Gift Card contest.

[4-your-brain]

Hey guys I´m back. And I got you a contest:

We recently passed 2000 followers  🎉

Therefore you get the chance to win a 50€ Amazon Gift Card !

Here´s what you have to do:  👇🏻

1. Like and reblog this post.

2. Reblog the next 5 posts that will follow up on this one.

3. Type your guessed follower number for this blog under the 5th post after this one.

The closest guess will win. In case of multiple closest guesses I will determine the winner by lot.

The last (5th) post will be uploaded on 3rd of April, 11pm Central European Time.  ⏱

You have to guess the exact number of followers this blog will have at this time.

Then 24 hours later this contest ends and I will announce the winner a few minutes later.

Good luck  👍 (PS: Activate notifications to get yourself an advantage !)

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Disclaimer: The shown picture is just for illustration purposes.

[4-your-brain]

Who’s to blame for the neurotoxin poisoning the Pacific? | Verge Science

The crabbing industry in California is under siege: from toxic algae, climate change, and, some argue, Big Oil. We spent a day on a fishing boat to find out what’s really threatening commercial crabbing, and what can be done about it.

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Can Humans Sense Magnetic Fields? | Veritasium

Research has found human brains can pick up on rotations of geomagnetic-strength fields as evidenced by drops in alpha wave power following stimulus. For more, see https://ve42.co/magneto

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A 5G World Is on the Horizon, But How Will It Work? | Seeker

The rumors of a 5G wireless network, with the fastest connectivity we've ever experienced, is finally coming this year. Read More: Qualcomm already has a new 5G chip that promises sleeker, long-lasting phones https://www.cnet.com/g00/news/qualcom...

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How Tech Cures Pain Without Opiates | CNBC

Living in poverty or rural areas increases the odds of suffering from chronic pain, and one-fifth of adults in the U.S. live with the condition, according to a new study from the Centers for Disease Control and Prevention.

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Check out Quantum Questions for some great physics and science stuff.

I chose to give @quantum-questions a shout out for their big support over the last weeks. They got my number one supporter these days.

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How to make inverted bubbles | Steve Mould

You can make a movable hole in soap film with a loop of thread. It's surprising when you first see and it's fun to think about why it behaves the way it does. It's also a useful metaphor for cell membranes so I explore that a little bit too.

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